Connection To The Vehicle Cooling System - Valeo Thermo S 160 Einbauanweisung

Connection to the vehicle cooling system

6 Connection to the vehicle cooling system
The heater is to be connected to the vehicle cooling system in
accordance with Figures 1 and 6. The system must contain at least 10
litres of coolant. A minimum of 20% of a good quality antifreeze should
be maintened in the heating circuit of the heater at all times.
A current list of recommended by Spheros antifreeze agents can be
found on the Spheros website.
Basically the water hoses supplied by SPHEROS should be used. If this
is not the case, the hoses must comply at least with DIN 73411
requirements. The hoses are to be routed without any kinks and - for
proper venting of the heater - in an upward pitch, if possible. Hose
connections must be secured against slipping off by means of hose
clamps.
NOTE:
The tightening torques of the hose clamps used must be observed. After
2 hrs. / 100 km, the hose clamps schould be retightened.
In the vehicle cooling system, or in a separate heating circuit, only pres-
sure control valves with an opening pressure of min. 0.4 bar and max.
2.0 bar may be used.
Before the heater is started up for the first time, or after the coolant has
been replaced, it must be ensured that the cooling system is properly
bled. Heater and piping should be installed in such a way that static
bleeding of the system is ensured.
Proper bleeding action can be recognised by the nearly silent operation
of the circulating pump. Insufficient bleeding during heater operation can
result to tripping of the temperature limiter.
If the circulating pump U 4855 / Aquavent 6000C is used it will be auto-
matically deactivated approx. 10 seconds after its activation if coolant is
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Thermo S 160/230/300/350/400
lacking or a blockage of the pump impeller has occurred, and can then
be restarted after approx. 2 minutes.
If the circulating pump U 4856 / Aquavent 6000SC is used, it will be au-
tomatically deactivated approx. 45 seconds after its activation if coolant
is lacking or a blockage of the pump impeller has occurred, and can then
be restarted after approx. 2 minutes.
ATTENTION:
Before commissioning the heating system, the heating hoses, the
pump and the heater must be completely filled.
Only by Spheros recommended antifreeze agents may be used.